Run the function from the following locations:
MOUS_ICO Menu: Railway > Platform Edge Design
MOUS_ICO Toolbar: Railway: Platform Edge Design
MOUS_ICO Ribbon: Railway > Draw: Platform Edge Design Platform Edge Design
The dialog box 'Platform edge design' will pop up.
The Platform Edge Design tool calculates and presents the edge of the specified railway platforms or ramps. By entering the !!key parameters!! and referring to the reference track, you will get the calculated platform edge based on predefined design standards.
Ideally all platforms are to be located on straight track sections, with no curves for the horizontal or the vertical alignments. Then the height difference and the horizontal offset between the rail and the edge of the platform construction are defined by the design standards. But as soon as a platform has to be designed in other parts of the track than the ideal, the manual calculation of the required platform edge is a time-consuming process.
The Platform Edge Design tool will ease the process to find the correct edge of platforms, whether the platform is located:
Based on the current geometric situation the platform edge will be calculated against the actual requirements.
Select reference track and eventually which switch is to be influencing the platform edge.
The calculated result can be presented in the current drawing as a 2D or 3D polyline. The result will also be presented in a spreadsheet when calculating the platform edge.
If required the calculated edge of the platform can be drawn in the current drawing as a polyline with the following options:
The calculated result will be presented in a spreadsheet format.
When pressing the button 'Calculate', a preview of the result is presented in the drawing. The calculated data are also presented in a XLS report, with a column for the following data, presenting the results for all calculated increments:
When the design is completed, press the button 'Draw' to add the polyline to the current drawing. Cancel ends the session, but exported files are not removed.
Use the button 'Edit existing platform edge <' to modify a platform edge.
Tip: Use the tool 'Setting out -from drawing' tool from Novapoint Base (Refer 'Novapoint Base' to export the 3D polyline data to different file formats.
Tip: Copy the calculated result from the spreadsheet and paste to the current drawing for documentation of platform edge data.
* Hp =
Platform design height from reference track
= iR =
Horizontal incremental of inner side in curve
= yR =
Horizontal incremental of outer side in curve
Figure 1 show the general parameters of platform edge design. All parameters are the offset distance that reference from designed centreline of platform edge.
Figure 01
Figure 02
The distance from the reference track (positioned by default in the middle of the rails) is calculated using the following formulas:
Ai = Ao + Kir =
Ao + iR
Ay = Ao + Kiy = Ao + yR
* Hi = Hy = Hp when no cant/superelevation
* Ai = Ay =
Ao
In the case of straight and curve sections without cant the height of platform is constant with Hp. Calculation of the horizontal increments for platforms at the inner or outer side is based on the following parameters and formulas:
Ay = Ao + Ky = Ao + yR
Ai = Ao + Ki = Ao + iR
The horizontal increments, Kir and Kyr, are defined by a theoretically carriage with length 24.0m, and axle base 18.0m. The curve increments for curves with R >180.0m can then be calculated with the following formulas:
Kir = iR = 81000
2*R Kyr = yR= 63000 2*R
In case of transition sections, the horizontal offset will increase/decrease on this section depending on the length of transition curve. The formula of platform edge is:
Ki =
L + 10 - x
L + 10 ;
Ky =
L + 15 - x
L + 10
In the case of curve or transition section the height of platform is varying with Hi/Hy. The formulas of horizontal offset of inner and outer side and Hi/Hy of platform are:
Ai =
Ao + Ki +
h
[h in mm]
1500
;
Hi =
Hp - 0.63 * h -
h
[h in mm]
1500
;
Ay =
Ao + Ky -
h
[h in mm]
1500
;
Hy =
Hp + 1.63 * h -
h
[h in mm]
1500
For line-curve combination the transition of both outer side and inner side of curve element show in the following figure:
For line spiral curve combination the transition of both end of curve element show in the following figure:
When a switch is specified near the new platform the horizontal edge distance calculations will be based at the switch stock rail, SS. Extra widening (Yr) will be added based on the switch radius. In the curve section the extra widening is described for every 0.5m. From SS the platform edge is described with constant widened distance the first 5.0m after SS, and then linear to normal distance 20.0m after SS.